package com.kong.meirimall.product.exception;

import com.kong.common.exception.BizCodeEnume;
import com.kong.common.utils.R;
import lombok.extern.slf4j.Slf4j;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestControllerAdvice;

import java.util.HashMap;
import java.util.Map;

/**
    集中处理所有异常,不用 BindingResult
 */
@Slf4j   // 日志记录
// 同时具有 @ControllerAdvice 和 @ResponseBody（因为要以 json 写出去） 功能
@RestControllerAdvice("com.kong.meirimall.product.controller")
public class MeirimallExceptionControllerAdvice {
    // 处理校验出现的异常
    @ExceptionHandler(value = MethodArgumentNotValidException.class)
    public R handleValidException(MethodArgumentNotValidException e){
        log.error("数据校验出现问题{},异常类型：{}",e.getMessage(),e.getClass());
        BindingResult bindingResult = e.getBindingResult();
        Map<String,String> errMap = new HashMap<>();
        bindingResult.getFieldErrors().forEach(fieldError -> {
            errMap.put(fieldError.getField(),fieldError.getDefaultMessage());
        });
        return R.error(BizCodeEnume.VALID_EXCEPTION.getCode(), BizCodeEnume.VALID_EXCEPTION.getMsg()).put("data",errMap);
    }
    //处理任意类型的异常
    @ExceptionHandler(value = Throwable.class)
    public R handleException(Throwable throwable){
        log.error("错误：",throwable);
        return R.error(BizCodeEnume.UNKNOW_EXCEPTION.getCode(), BizCodeEnume.UNKNOW_EXCEPTION.getMsg());
    }
}
